[Tagging] contact:* for review websites

[Élisée Reclus]

Am 16.09.2017 um 15:25 schrieb marc marc:
> and maybe it makes sense only for review system where you can retrieve 
> the note from an id. systems where you have to go to their own website 
> are unusable from an osm search (find a hotel close by with a 4 star review)

All three services provide an API and it should be possible to make such
queries.

DuckDuckGo (a small search engine) for example shows ratings from Yelp
and Tripadvisor (perhaps also from Foursquare, it only shows the ratings
from one service for one place).

They're all commercial services and not as open as as OSM. An
"OpenReview" service similar to OSM/Wikipedia/Wikidata would be better,
but that doesn't seem to exist or at least is not very popular.

Reclus